Primary: Oklahoma has a closed primary system, in which the selection of a party's candidates in an election is limited to registered party members.

Voter registration: Voters had to register to vote in the primary June. For the August 28 runoff, the voter registration deadline is August 3. For the general election, the voter registration deadline is October 12.[1]

This is the 3rd congressional district prior to the 2010 redistricting.

Candidates

Note: Election results were added on election night as races were called. Vote totals were added after official election results had been certified. For more information about Ballotpedia's election coverage plan, click here. If you find any errors in this list, please email: Geoff Pallay.